You're guessing about right. There are some issues with switching circuits in Qucs. You might also try reducing Roff to, say, 1e9 and see if this helps.
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I just add resistor to l-c tank from simple example.
Transient simulation not work.
~/.qucs $qucsator -b -p LCr_prj -i netlist.txt project location: modules to load: 0 factorycreate.size() is 0 factorycreate has registered: parsing netlist... checking netlist... netlist content 1 Switch instances 1 C instances 1 L instances 2 R instances 1 Vdc instances 1 TR instances creating netlist... [************** ] 33.33%Nothing changes then.
This is the netlist:
Last edit: Sergey Ivanov 2014-11-24
When i set R1 = 0.3 Ohm or more, it works.
May be this is something internal, related to floating point precision in simulation arithmetics…
You're guessing about right. There are some issues with switching circuits in Qucs. You might also try reducing Roff to, say, 1e9 and see if this helps.
Indeed with Roff value 1e9 simulation work for R1 = 0.1 Ohm.
Thank you. This is the grain of experience for the future.
There is an issue with the switch. See related tickets:
https://github.com/Qucs/qucs/issues/34
https://sourceforge.net/p/qucs/bugs/128/